Belly bloat makes even the most toned six-packer look like they just downed a six-pack of Coors. Fight back against the gas and water retention with bananas. One recent study found that women who ate a banana twice daily as a pre-meal snack for 60 days reduced their belly-bloat by 50 percent! Why? The fruit increases bloat-fighting bacteria in the stomach, and it's also a legendarily good source of potassium, which can help diminish retention of fluids. (And if you're looking for more helpful tips, sign up for our newsletter to get daily recipes and food news in your inbox!